Grate



(No Model.) 2 s heetsLV-Sheet 2.

J. WALP. GRA'IE.

No. 560,827. Paiented May 26, 1896` a Leung" w :mm

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NITED STATES PATENT Enron.

JAMES YVALP, `OF EASTON, PENNSYLVANIA.

GRATE.

SPECIFICATION forming part of Letters Patent No. 560,827, dated May 26,1896.

Application nea July 29,1895. semina 557,524. ditmaal.) v

ing and shorteningof the grate as requiredA without wasting material,and to secure the grate-bars in place against vertical movement.

Other objects are contemplated and will be disclosed in the following`description and illustrated in the accompanying drawings, in

1 gether.

which- Figure lis a perspective view of a grate of this invention. Fig.2 is a view similar to Fig. 1, showing the grate partially drawn out andthe front of the base removed and set thereagainst. Fig. 3 is a top planview of a gratebar. Fig. 4 is an end view of the same. Fig. 5 is adetail view of a portion of the grate-bed. Fig. G is a detail view ofone of the blocks provided for holding the journals of the gratebars intheir bearings.

The base l is provided near its upper end with inwardly-extending ledges2,which form supports for the grate-bed, and in order to adapt the basefor fire-boxes of different lengths it is composed of a series ofsections 3, which are adapted to be secured together by bolts ormachine-screws, the edge portion of one section having a flange l tooverlap the contiguous or adjacent edge portion of the next section, soas to form a closed joint, said flange being apertured at properintervals in its length to receive the fastenings by means of which theseveral sections are held to- The sections 3 will be provided indifferent lengths, so that one or more sections may be placed togetherto provide a base of the required length. A flange 5 extends inwardlyfrom the top edge of the base and acts jointly with the ledge 2 toretain the bed 6 in proper position. The front 7 is removably attachedto the main portion of the base and is supplied with a door 8,whichadmits of access being had to the ash-pit. The bed comprises similarside bars 9 and con necting end bars 10, which are preferably L-shapedin cross-section. The side bars 9 are formed of sections, which aresecured together by bolts 1l, which pass through overlapping portions atthe adjacent ends of the sections. By providing the side bars insections the bed can be lengthened or shortened to suit thesize of thefire-box to which the grate is to be fitted. The sections of the bed maybe'of uniform length; but it is preferred to make them of varyinglengths, so that a bed of the required length may be readilyobtained.zontal portions of the side bars secure a purchase upon theinwardly-extending ledges 2, and the vertical portions have pockets 12at regular intervals in their length to receive the journals 13 of thegrate-bars let. Semicircular or curved depressions 15A are formed in thebottoms or lower walls of the pockets and provide bearings for the saidjournals 13. The end walls of the pockets diverge or flare slightly fromthe lower tothe upper ends of the pockets, so as to facilitate theentrance into the pockets of the blocks 16, which rest upon the journals13 and prevent vertical displacement thereof. Vertical flanges 17 aredisposed at the ends of the pockets 12 and at the open sides`thereof,andthese flanges gradually thicken from the upper to their lower ends.

The blocks 16 have a semicircular notch 18 in their lower ends toreceive the upper portion of the journals 13, and they flare slightly tocorrespond with the inclination of the end walls of the pockets, and thefront corners thereof are rabbeted, as shown at 19, to re ceive thevertical flanges 17, said rabbets 19 widening in their length tocorrespond to the gradual increase in the width of the said flanges 17.These blocks are retained in the pockets by the flanges 17 entering therabbets 19, and the inner sides of the blocks come Hush with the innersides of the bars 9, thereby preventing any projecting portions whichwould impede the free movements of the grate-bars 14. The upper ends ofthe blocks come about flush with the top edge of the bars 9, so as to beengaged by the 'inner flange 5, by means of which they are held in placewithin the pockets. The rear sidesof the The hori-` IOO blocks areconcaved between their edges for the sake of lightness, and also toprevent overheating of the outer or rear wall of the pockets.

The grate-bars 14 are formed at regular intervals in their length withwings 20, and these wings project laterally from the sides of the barsan equal distance and from the top thereof. These wings 2O have verticaleX- tensions 21 directly above the bars and the upper edges slope inopposite directions from the vertical extensions, and the outer edgesare formed with a series of teeth 22, which in the rocking movements ofthe grate bars crush and break up clinkers and prevent choking of thegrate. The vertical eXten sions 21 are in alinement and are designed fora purpose similar to the teeth 22, and also prevent a too-rapid burningout of the gratebars by supporting the live coals at a distance from thegrate-bars. An arm 23 is pendent from one end of each of the grate-barsand terminates in a lateral extension which is fitted into an opening ina coupling-link or connecting-bar 24, by means of which the gratebarsare connected in series, so that they may be rocked or oscillated ontheir journals at one and the same time. The end links eX- tend throughopenings in the front 7 and are pivotally connected withvertically-disposed levers 25, which are fulcrumed to brackets 26,attached to the said front. A shaker 27 is adapted to be fitted to theupper ends of the levers 25 when it is required to operate thegrate-bars.

The extremities of the side bars 9 extend at right angles to the lengthof the said bars, as shown at 2S, and are notched so as to receivefastening-bolts 29, by means of which the bed is held in place after theparts are properly assembled.

In arranging the parts the grate-bars are placed in position with theirjournals resting in the recesses or bearings 15 in the pockets, and theblocks 16 are placed in position over the said journals to hold them inplace, the said blocks being retained in the pockets by the overhangingportion or top flange 5. The bed is adapted to slide upon the ledges orrests 2 and move in the space formed between the said ledges and the topflanges 5. Thus it will be seen that in the event of a grate-barwarping, breaking, or burning out it can be readily removed and replacedby a new one without much annoyance or difficulty. It will be understoodthat the grate can be applied to any style of furnace or heater and thatit is adapted for any style of fire-pot, and in adapting the same to afireboX of special construction all that is necessary is to provide thesame with inwardlyextending ledges 2 to support the bed and with aportion corresponding to the inner top fian ge 5, so as to project overthe top edge of the side bars so as to retain the blocks 1G within theirpockets. This adaptation will be obvious to any one skilled in the artand need not be referred to in detail, as the disposition of the partswillvary withv the different makes of furnaces and heaters.

Freni what has been said it will be understood that the invention issusceptible of general application and that various changes in the form,proportion, and the minor details of construction may be resorted towithout departing from the principle or sacricing any of the advantagesof this invention.

I-Iaving thus described the invention, what is claimed as new is 1. Thecombination with a base having a rest and an overhanging portionextending parallel with the rest, of a bed adapted to slide upon therest and beneath the said overhanging portion, and havingpockets atintervals in its length, said pockets opening upward through the topedge of the said bed, grate-bars having their end portions fitted in thepockets, and blocks supported upon the end portions of the grate-barsand held in the pockets from vertical displacement bythe saidoverhanging portion, substantially as and for the purpose set forth.

2. In a grate, the combination of a base formed of aseries of sectionswhich are constructed to be secured together to admit of its lengtheningand shortening, each section having an overhanging portion and a resteX- tending in parallel relation and alining with corresponding parts ofthe other section, a bed adapted to slide upon the rests and beneath theoverhanging portions of the sections of the base and composed of anumber of sections which are adapted to be secured together, the sidebars of the said bed having pockets at regular intervals in theirlength, and grate-bars having their en d portions fitted in the saidpocket-s and held therein from vertical displacement by the saidoverhanging portions of the base sections, substantially as specified.

3. In a grate, the combination of a bed coinprising a bar having pocketsat intervals in its length open on their inner and top sides and havingvertical flanges at their ends adjacent to the open sides, said flangesfiaring at their upper ends and having their rear edges incliningdownwardly and outwardly, grate-bars having their ends fitted in thesaid pockets and touching the outer closed sides thereof, and blocksinserted within the pockets from their top sides and having their edgesrabbeted to receive the said flanges to have their outer sides comeflush with the inner side of the said bed-bar, substantially as setforth.

4. In combination, a bed having pockets formed at intervals in thelength of a side bar, said pockets being closed at their outer side andopening upwardly and laterally through the said bar, and having theirend walls ilaring upwardly, and provided with inwardlyextending verticalflanges at the open sides of the pockets gradually widening from the topto the lower ends, grate-bars having their IOO IIO

ends fitted in the said pockets, and tapering blocks concaved in theirrear or outer side and having their front corners rabbeted to receivethe aforesaid vertical ianges, the top andinner sides of the blocksbeing substantially flush With the upper edge and inner side of the saidbar, substantially as described for the purpose set forth.

5. In a grate, the combination of a base having inwardlyextending ledgesand flanges, a bed adapted to slide upon the ledges and beneath theflanges and having end portions extending at right angles to the planeof the bed and notched to receive fastenings, the side bars of the bedhaving pockets which open upward through their top edges, grate-barshaving their end journals itted in the said pockets, blocks placed inthe pockets and held therein from vertical displacement by the said topflanges, and actuating mechanism for os- 2o JAMES WALP. Witnesses:

W. H. NEIMEYER, JOHN S. NOBLE.

